Frame for the glasses of signal-lanterns.



No. 792,877. PATENTED JUNE 20, 1905. R. BLACK.

FRAME FOR THE GLASSES OF SIGNAL LANTEBNS.

APPLICATION FILED DEC. 22, 1904.

WI NEEDZ (Q I VENTD R W ,7 v ofimb J zaw 0 FE ZgMQ 9 M Patented June 20,1905.

FFICE.

PATENT ROBERT BLACK, OF NEW YORK, N. Y., ASSIGNOR TO THE DRESSELRAILWVAY LAMP \VORKS, OF NEW YORK, N. Y., A CORPORATION OF NEWV YORK.

FRAME FOR THE GLASSES OF SIGNAL-LANTERNS.

SPECIFICATION forming part of Letters Patent No. 792,877, dated June 20,1905.

Application filed December 22, 1904. Serial No. 237,882.

To all who/n, if) nan/y concern.-

Be it known that I, ROBERT BLACK, a citizen of the United States,residing in the borough of Manhattan, in the city, county, and State ofNew York, have invented an Improvement in Frames for the Glasses ofSignal-Lanterns, of which the following is a specification.

My invention relates to improved devices for holding the color-glassesof a signal-lantern and for removing the same either for cleaning or forreplacing a broken glass with a whole one.

In signal-lanterns it has heretofore been usual to firmly secure thecolor-glasses in frames, and it has been a diificult matter when theglass was broken to get at the frame to remove the broken pieces and putin a new glass-in fact, so difficult that usually the lantern must besent to the factory and for the time being is out of use, whichdisadvantages it is the object of my invention to overcome.

I provide an apertured frame-arm of sheet metal, having in part anangular rim, a finger overturned from said rim, and at the oppositepoint a pivoted plate with an offset free end. The color-glass of thelantern, cut to shape, fits the frame-arm within the angular rim andbeneath the finger at one side. After the glass is thus put in place thepivoted plate is turned so that the offset free end passes over the edgeof the glass to hold it in position. This framearm is adapted to bemounted on a shaft in a signal-lantern and to be placed between the lensand the light of the lantern or moved away, as will appear from anapplication for Letters Patent filedby me of even date herewith.

In the drawings, Figure 1 is an elevation representing my improvedframe-arm with a color-glass in position, and Fig. 2 is a longitudinalsection at the dotted line a; m of Fig. 1.

The frame-arm a is of sheet metal. It is preferably secured to a castplate 5 by the rivets 2, said cast plate having a-slceve b to receive ashaft on which the sameswings. The portion of the frame-arm a adapted toreceive the color-glass may be of any desired shape. I'have, however,shown the same as circular, 3 indicating the boundary-line of theaperture, and c the color-glass. The framearm a is formed with a rim a,bounding the same for about two-thirds of a circle. At one side and bentover from the rim a is a finger-4.

(Z represents a pivoted plate secured by the pivot-pin 5 to the castplate 7) and provided at its free end with an oflset cl. The frame-arm aon the center line is provided with a recess, which is advantageouslystamped therein, as well as in the plate 5, and the pivoted plate cl isprovided with a projection which is adapted to be received in saidrecess when the pivoted plate (Z is centrally on the center line of theframe-arm, the projection of the plate (Z snapping into place in saidrecess and performing the function of holding the pivoted arm (Z in thecenter line free from liability to accidentally shift its positionthrough the movement of the lantern or the vibration or jolting of anytrain to which the lantern may be connected. In Fig. 1 this pivotedplate cl is shown by dotted lines to one side of its initial holdingposition and in the position in which the same will be placed when acolorglass 0 is placed in or taken out of the frame.

From the drawings it will be apparent that the color-glass is also ofcircular outline, is

received within the rim 3 of the frame, and I conforms thereto, restingupon the flat surface of the frame-arm a, with one edge beneath thefinger 4 and the opposite edge beneath the offset end d of the pivotedplate (Z when the plate is swung from the dotted position, Fig. 1, intothe full-line position. A circular form is preferable for the frame-arma, as shown in the drawings; but other forms may be employed withoutdeparting from the spirit of my invention or the precise constructionillustrated and described.

I claim as my invention 1. In a signal-lantern, an apertured framearmfor a color-glass having an angular rim extending around the majorportion of the periphery of the glass, a finger overturned from the rimat one side and a pivoted plate at the opposite side with an offset freeend to pass over the edge of the glass.

2. In a signal-lantern, an apertured framearm for a color-glass havingan angular rim extending around the major portion of the periphery ofthe glass, a finger overturned from the rim at one side, a pivoted plateat the Opposite side with an offset free end to pass over the edge ofthe glass, and means for holding the said pivoted plate in place freefrom accidental displacement by vibration.

3. In a signal-lantern, an apertured framearm for a color-glass havingan angular rim extending around the major portion of the periphery ofthe glass, a finger overturned from the rim at one side, a pivoted plateat the opposite side with an offset free end to pass over the edge ofthe glass, the framearm being provided with a recess and the pivotedplate with an interlocking projection for holding said pivoted plate inan initial position of use free from accidental displacement byvibration.

4. In a signal-lantern, an apertured framearm, composed of an aperturedsheet-metal part and a plate connected thereto by rivets, a

rim formed on the sheet-metal part bounding the major portion of theaperture therein and into which rim the color-glass is adapted to bereceived and fit, a finger overturned from the rim at one side and apivoted plate with an offset free end to extend over the opposite edgeof the color-glass, secured to the plate portion of the frame-arm andadapted to be turned toward the glass to hold the same, or away from theglass to release the same.

Signed by me this 17th day of December,

' ROBT. BLACK. l/Vitnesses:

GEO. T. PINCKNEY,

S. T. HAvILAND.

